Since the outbreak of pneumonitis caused by a new coronavirus infection in Wuhan, Hubei years ago, the national epidemic situation has entered a state of high alert. How to efficiently and scientifically prevent epidemics, cut off the transmission channels in a timely manner, and treat patients as s

The forestry department shoulders the responsibility of protecting forest resources. A fast, accurate, safe and reliable wireless only early warning communication system is an important guarantee for the forestry department to fulfill its duties. In recent years, with global warming and frequent for

China's aviation rescue systemEmergency rescue generally refers to activities and plans for the prevention, preparation, response and recovery of sudden and destructive emergencies. According to different types of emergency, it is divided into emergency rescue in the fields of health emergency, traf

Five hours after the Wenchuan earthquake in China that year, the network was basically paralyzed, and the telephone connection rate recovered 75% within one hour after the Lushan earthquake. What is the reason? It is reported that it is the national strategic document issued by the Ministry of Indus

In recent years, the continuous development of communication technology and communication tools are in a state of continuous development. More and more communication channels make our lives and work more and more convenient and efficient. Even with the advanced development of mobile phones, walkie-t

In order to solve the problem of mine communication, IFLY designed and developed a 4G wireless communication system based on 4G communication technology. Based on the industrial Ethernet system, it established a "wireless voice, video communication and dispatch communication system" to form a comple

With the rapid development of wireless communication technology in China, the degree of intelligence of urban buildings is getting higher and higher, modern buildings generally have complex structures, and the walls are more shielded from signals. The intercom itself cannot meet the call requirement

1. Introduction of MESH ad hoc network and its main technologiesMESH ad hoc network is a new type of wireless network that is completely different from traditional wireless networks. It is a technology that dynamically establishes new links to connect with other nodes. It has the advantages of self-

With the rapid development of radio technology, limited frequency resources have been unable to meet the increasing demand for frequency. In order to improve the utilization efficiency of frequency resources, comprehensive management of frequency resources has received widespread attention. During t